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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Potato > Leaves curled or distorted

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Potato > Leaves > Leaves curled or distorted

1 of 4
  • Potato Virus Y 1
  • Potato Virus Y 2

Potato Virus Y (PVY)

  • Leaf symptoms vary greatly depending on strain of virus present
  • Light and dark green mosaic pattern on leaves, occasionally leaves crinkle
  • In severe cases, light brown rings form on tuber skin
  • More information on Potato Virus Y (PVY)...
2 of 4
  • Potato Leafhopper 1
  • Potato Leafhopper 2

Potato Leafhopper
Empoasca fabae

  • Leaves appear wrinkled from leafhopper feeding; may have a yellow tinge to the leaves
  • PLH adults are lime green, slender, small (1/8 inch long), and wedge-shaped
  • Leafhoppers are present from June-August
  • More information on Potato Leafhopper...
3 of 4
  • Potato Leaf Roll Virus (PLRV) 1
  • Potato Leaf Roll Virus (PLRV) 2
  • Potato Leaf Roll Virus (PLRV) 3

Potato Leaf Roll Virus (PLRV)

  • Leaves are cupped upward and yellow (white potato) or reddish (red potato)
  • Leaves become leathery and dry as infection progresses
  • Plants are stunted
  • Brown to black flecks can be seen in a net like pattern when the tuber is cut open
  • More information on Potato Leaf Roll Virus (PLRV)...
4 of 4
  • Zebra Chip 1
  • Zebra Chip 2
  • Zebra Chip 3

Zebra Chip
Candidatus Liberibacter spp.

  • Aerial tubers form from main stem
  • Leaves may be purple or yellow, appear scorched, and wilt
  • Inside of potato is a mottled brown
  • Vectored by the potato psyllid
  • Currently not found in MN. If suspected, report it to the Minnesota Department of Agriculture at the "Arrest the Pest" Hotline: 651-201-6684 (metro) or 1-800-545-6684 (Greater Minnesota)
  • More information on Zebra Chip...

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